Full Mouth Implants vs Dentures: Which Is Right for You?

If you have lost most or all of your teeth, you may be considering whether full mouth dental implants or dentures are the right solution. Both can restore your ability to eat, speak, and smile with confidence — but they differ significantly in stability, comfort, longevity, and cost.

Full mouth implants are permanently fixed into the jawbone and function like natural teeth. Dentures are removable prosthetics that sit on the gums and can be taken out for cleaning. The most appropriate option depends on your oral health, bone density, lifestyle, and budget — all of which your dentist will assess during a consultation.

This guide explains the key differences to help you understand your options. The right treatment will always depend on a thorough clinical examination and personalised treatment plan.

Quick Comparison: Full Mouth Implants vs Dentures

Purpose

Implants

Replace all teeth with a fixed, implant-supported full arch

Dentures

Replace all or most missing teeth with a removable prosthetic

Stability

Implants

Fixed permanently — does not move or shift

Dentures

Removable — may shift or loosen over time

Comfort and Function

Implants

Feels and functions like natural teeth

Dentures

Functional but may feel less natural — adjustment period required

Strength and Durability

Implants

Very strong — titanium implants fuse with jawbone

Dentures

Moderate — acrylic or chrome materials may wear or break

Aesthetic Result

Implants

Natural appearance — individually crafted or full-arch prosthesis

Dentures

Good appearance — may look less natural over time as bone changes

Treatment Time

Implants

3–12 months including healing stages

Dentures

2–6 weeks for fabrication and fitting

Cost (at Our Practice)

Implants

Significantly higher — depends on number of implants

Dentures

From £547.50 (member) / £1,095 for a full acrylic denture

Longevity

Implants

Implant fixtures: 20–25+ years — prosthesis: 10–20 years

Dentures

5–10 years before replacement or relining is needed

Suitability

Implants

Patients with adequate bone density or willingness to undergo grafting

Dentures

Most patients — including those unsuitable for surgery

What Are Full Mouth Implants?

Full mouth dental implant treatment involves placing multiple titanium implants into the jawbone to support a complete arch of fixed replacement teeth. The implants fuse with the bone through a process called osseointegration, creating a permanent foundation for crowns, bridges, or a full-arch prosthesis.

Full mouth implants are designed to replace all teeth in the upper jaw, lower jaw, or both. Depending on the approach, this may involve individual implants supporting separate crowns, or a technique such as All-on-4 where four implants support an entire arch. Once placed, the teeth are permanently fixed and function like natural teeth.

Benefits

  • Permanently fixed — no removal or adhesives required
  • Feels and functions like natural teeth
  • Preserves jawbone density through implant stimulation
  • Strong, stable teeth that do not shift or slip
  • Long-lasting — implant fixtures designed to last 20–25+ years
  • Natural appearance with individually crafted restorations

Suitable Candidates

Full mouth implants are suitable for patients who have lost most or all of their teeth and have adequate bone density to support implant placement. Patients with insufficient bone may require grafting before treatment. A thorough clinical assessment including 3D imaging is required to determine candidacy.

What Are Dentures?

Dentures for replacing full or multiple missing teeth are removable prosthetic devices designed to replace missing teeth and surrounding tissue. Full dentures replace all teeth on an arch, while partial dentures replace several missing teeth alongside remaining natural teeth.

Modern dentures are custom-made from impressions of your mouth and are available in acrylic, cobalt-chrome, and flexible materials. They rest on the gums and are held in place by suction, natural anatomy, or adhesive. Dentures are removed for cleaning and typically overnight, and are generally ready within 2–6 weeks.

Benefits

  • Non-surgical — no anaesthesia or recovery period required
  • Lower initial cost than implant treatment
  • Suitable for most patients regardless of bone density
  • Ready within 2–6 weeks of initial impressions
  • Available in multiple materials to suit different needs
  • Can be adjusted, relined, or replaced as needed

Suitable Candidates

Dentures are suitable for most patients who have lost multiple or all teeth, including those who are not candidates for surgical implant placement due to medical conditions, insufficient bone, or personal preference. They offer a practical, non-invasive solution for restoring function and appearance.

Key Differences Between Full Mouth Implants and Dentures

Fixed vs Removable

Full mouth implants are permanently fixed into the jawbone and are not removed. Dentures are removable prosthetics that are taken out daily for cleaning and overnight. This fundamental difference affects stability, comfort, and daily routine.

Stability and Function

Implants are anchored to the jawbone and do not move — they function like natural teeth for eating, speaking, and smiling. Dentures may shift or loosen over time, particularly as the jawbone changes shape, which can affect confidence and comfort.

Impact on Jawbone

Dental implants stimulate the jawbone, helping to preserve bone density and maintain facial structure. Dentures rest on top of the gums and do not prevent bone resorption, which means the jaw gradually loses volume over time.

Maintenance Requirements

Implants are maintained like natural teeth — brushing, flossing, and regular dental check-ups. Dentures require daily removal, soaking, and careful cleaning, along with periodic professional adjustments as the jaw shape changes.

Longevity

Implant fixtures are designed to last 20–25+ years with proper care. Dentures typically need replacing every 5–10 years due to wear and changes in jaw shape. Implants have a higher upfront cost but may be more economical long-term.

Aesthetic Outcome

Both options can achieve a natural-looking result. Implant-supported teeth maintain their appearance over time because the jawbone is preserved. Dentures may begin to look less natural as bone loss causes changes in facial shape and denture fit.

Cost

Full mouth implants are a significantly higher investment than dentures. Dentures start from £547.50 (member) for a full acrylic set. Implant costs depend on the number placed and approach used. However, the long-term cost difference narrows when factoring in denture replacements.

Pros and Cons

Full Mouth Implants

Permanently fixed — no removal or adhesives needed
Feels and functions like natural teeth
Preserves jawbone by stimulating bone through implant fixtures
Does not shift, slip, or click during eating or speaking
Long-lasting — implant fixtures designed to last 20–25+ years
Individually replaced crowns or full-arch prosthesis options
Significantly higher upfront cost than dentures
Requires surgical placement under local anaesthesia or sedation
Treatment timeline of 3–12 months including healing
Requires adequate bone density — bone grafting may be needed
Not suitable for all patients — clinical assessment required

Dentures

Lower initial cost than implant treatment
Non-surgical — no anaesthesia or recovery period
Suitable for most patients regardless of bone density
Ready within 2–6 weeks of initial impressions
Can be adjusted, relined, or replaced as needed
Available in acrylic, cobalt-chrome, and flexible materials
Removable — must be taken out for cleaning and overnight
May shift, slip, or click during eating and speaking
Does not prevent jawbone loss — bone continues to resorb
May require adhesive for improved stability
Needs replacing every 5–10 years as jaw shape changes
Can feel less natural than fixed implant-supported teeth

Cost Comparison

Full mouth implant treatment is a significantly higher investment than dentures. However, implants are designed to last decades, while dentures typically need replacing every 5–10 years. Below are our current prices for dentures and individual implants. Full mouth implant pricing depends on your individual case and is provided after a clinical assessment.

Single Implant (inc. crown)

Cost: From £1,475 / £2,950Lasts: 25+ years (fixture)

Full Mouth Implants (per arch)

Cost: Varies by caseLasts: 20–25+ years

Full Acrylic Denture

Cost: From £547.50 / £1,095Lasts: 5–10 years

Cobalt-Chrome Denture

Cost: £697.50 / £1,395Lasts: 7–10 years

Full mouth implant costs depend on the number of implants, the approach used, and whether bone grafting is required. For detailed implant pricing, see our guide to dental implant cost in London. Membership patients receive 50% off all treatments. We offer 0% interest finance options subject to status.

Which Option Is Best for You?

Best for Fixed, Stable Teeth

If you want permanently fixed teeth that feel and function like natural teeth without removal or adhesives, full mouth implants are the most stable solution available.

Full Mouth Implants

Best for Affordability

If cost is a primary concern, dentures offer a more affordable initial solution for replacing missing teeth. They are non-surgical and can be fabricated within weeks.

Dentures

Best for Long-Term Durability

If you want a solution designed to last decades with minimal ongoing costs, full mouth implants offer significantly greater longevity than dentures.

Full Mouth Implants

Best If Unsuitable for Surgery

If you have medical conditions that prevent surgery, insufficient bone density, or prefer a non-invasive approach, dentures provide an effective alternative.

Dentures

Frequently Asked Questions

Considering Full Mouth Tooth Replacement?

The best way to determine whether full mouth implants or dentures are right for you is with a personalised consultation. Our dental team will assess your oral health, bone density, and goals to recommend the most appropriate option — book a consultation with a dentist in London to discuss your options.

This page is intended for general educational purposes only and does not constitute personalised dental advice. Individual diagnosis and treatment recommendations require a clinical examination by a qualified dental professional. All treatment outcomes depend on individual clinical factors and cannot be guaranteed. The suitability of full mouth implants or dentures is determined during a clinical assessment. South Kensington Medical & Dental is registered with the Care Quality Commission (CQC) and all practitioners are registered with the General Dental Council (GDC).

Meet Our Dental Team

Our experienced dental team is fully qualified and registered with the GDC, delivering safe, high-quality care in line with the highest professional standards.
Because our patients deserve nothing less.

Registered. Regulated. Trusted.

At South Kensington Medical & Dental, we are fully registered with the Care Quality Commission (CQC) and our clinicians are registered with the relevant UK regulatory bodies, including the GDC and GMC. Our dentists, dental nurses and medical professionals deliver care that meets the highest clinical, safety and ethical standards, because our patients deserve nothing less.

Care Quality Commission logo
General Dental Council logo
General Medical Council logo
Nursing and Midwifery Council logo
Call Us
Book Now
Same-day slots available
4.9
·
CQCGDCGMC